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CHAU TUAN NGUYEN M.D.
NPI 1720169832
Otolaryngology in Ventura, CA

Active since October 17, 2006PECOS EnrolledAccepts Medicare Assignment
3170 LOMA VISTA RD, SUITE B, VENTURA, CA 93003(805) 641-4431(805) 641-4416 Get Directions Write a Review

NPPES record last updated: July 17, 2023. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jul 17, 2023, Oct 13, 2022 (2 updates tracked since 2022).

About Chau Tuan Nguyen M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

CHAU TUAN NGUYEN M.D. (NPI 1720169832) is an individual otolaryngology provider in Ventura, California, licensed in California (A88001) and active in the NPI registry since October 2006. He is enrolled in Medicare PECOS, maintains 3 additional practice locations, and is a graduate of University Of California, Geffen School Of Medicine (1999).

NPPES Registry Identity

NPI1720169832
Entity TypeIndividualMale
Primary Taxonomy207Y00000X
Provider Legal NameCHAU TUAN NGUYENCredential: M.D.
Location Address3170 LOMA VISTA RD, SUITE BVentura, CA 93003-2970
Mailing Address6294 Canary StVentura, CA 93003-0221 · (714) 290-9807 · Fax (805) 641-4416
Phone(805) 641-4431
Fax(805) 641-4416
Sole ProprietorNo
Medical School CMSUniversity Of California, Geffen School Of MedicineGraduated 1999
Enumeration DateOctober 17, 2006
Last NPPES UpdateJuly 17, 20232 updates tracked since enumeration
NPPES CertifiedJuly 17, 2023
✔ NPI 1720169832 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyOtolaryngologyAllopathic & Osteopathic Physicians
Taxonomy Code207Y00000X
License✔ Licensed in CA · A88001
Definition
An otolaryngologist-head and neck surgeon provides comprehensive medical and surgical care for patients with diseases and disorders that affect the ears, nose, throat, the respiratory and upper alimentary systems and related structures of the head and neck. An otolaryngologist diagnoses and provides medical and/or surgical therapy or prevention of diseases, allergies, neoplasms, deformities, disorders and/or injuries of the ears, nose, sinuses, throat, respiratory and upper alimentary systems, face, jaws and the other head and neck systems. Head and neck oncology, facial plastic and reconstructive surgery and the treatment of disorders of hearing and voice are fundamental areas of expertise.
3170 LOMA VISTA RD, Ventura, CA 93003
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Secondary Practice Locations 3

Location 1300 Hillmont Ave, Bldg. 340 Suite 401Ventura, SC 93033 · Phone (805) 652-6000
Location 2825 N 10th StSanta Paula, CA 93060-1309 · Phone (805) 933-8632
Location 3300 Hillmont AveVentura, CA 93003-1651 · Phone (805) 652-6000

Other Identifiers 1

MedicaidOOA880010CA

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Chau Tuan Nguyen M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID749263341
PECOS Enrollment IDI20050613001367
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignments

2

Medicare enrollment records show Chau Nguyen reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

County Of Ventura
0.1 mi
Mental Health (Including Community Mental Health Center)
200 HILLMONT AVE
Ventura, CA 93003
  • Reassigned Medicare billing, California enrollment
  • 710 clinicians in this Medicare group
NPI 1205394525 (805) 652-6002
Community Memorial Health System
0.2 mi
Gynecologic Oncology
2900 LOMA VISTA RD STE 205
Ventura, CA 93003
  • Reassigned Medicare billing, California enrollment
  • 267 clinicians in this Medicare group
NPI 1619453982 (805) 642-4830

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 7

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.
83 services53 patients
New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more 99204
This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.
60 services60 patients
Removal of impacted ear wax 69210
Impacted ear wax removal is a safe procedure to clear blockages in the ear canal caused by hardened ear wax. A healthcare professional uses specialized tools or a gentle irrigation method to loosen and remove the wax, improving hearing and alleviating discomfort.
41 services32 patients
Diagnostic exam of voice box using a flexible endoscope 31575
This procedure involves a doctor examining your voice box using a flexible endoscope, a thin tube with a light and camera. It's inserted through your nose or mouth to visualize your throat area. It helps detect any abnormalities in your voice box, ensuring optimal vocal health.
36 services33 patients
Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
31 services24 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
24 services20 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 93003 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$140.72 typical visit price
range $62.32 – $185.36
Typical copayment $35.18 (range $15.58 – $46.34)
Most-billed visit code 99204
Established Patient
$77.11 typical visit price
range $20.68 – $151.85
Typical copayment $19.27 (range $5.17 – $37.96)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 2

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

HEALTHCARE FOR JUSTICE
Family Medicine
3170 LOMA VISTA RD
VENTURA, CA 93003
Ventura County (805) 651-3353
SAMUEL LEE MD
Physical Medicine & Rehabilitation
3170 LOMA VISTA RD
VENTURA, CA 93003
Ventura County (805) 648-9830

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Chau Nguyen's NPI number?

The NPI number for Chau Nguyen is 1720169832. It was assigned to this individual provider in the NPPES registry on October 17, 2006.

Where is Chau Nguyen located?

Chau Nguyen practices at 3170 Loma Vista Rd Suite B, Ventura, CA 93003. The listed phone number is (805) 641-4431.

What is Chau Nguyen's specialty?

The primary specialty registered for this NPI is Otolaryngology with taxonomy code 207Y00000X.

Is Chau Nguyen enrolled in Medicare?

Yes. Chau Nguyen is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organizations bill Medicare for Chau Nguyen's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Chau Nguyen reassigns Medicare benefits to 2 organizations: County Of Ventura (Ventura, CA) and Community Memorial Health System (Ventura, CA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Chau Nguyen's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Chau Nguyen was last updated on July 17, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.